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W F M O L T 0 N TTTTTTTTTT G.

UNITED STATES PATENT UEEICE.

WILLIAM F. MOULTON, OF JERIGHO, VERMONT.

WATER-TUBING.

SPECIFICATION forming part of Letters Patent No. 246,187, dated August 23, 1881.

Application filed May 7, 1881.

.To all whom zt may concern Be it known that I, WILLIAM F. MoULToN, a citizen of the United States, residing at Jericho, in the county of Chittenden and State of Vermont, have invented certain new and useful Improvements in Water-Tubing; andIdo hereby declare the followin g to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part ot this specilcation.

Hy invention relates to an improved construction of the water-tubin g for which United States Letters Patent were granted to O. W. Stearns, under date of May 1862, and numbered 35,186, which said patent was subsequently assigned to me, and which I now own. My improvement in said patent consists, principally, in the tapering ofthe interior surface ofthe tenou ot the tubing from within outward, for the purpose of allowing for the expansion or swelling ofthe tubing at its extremities wthout'thereby contracting the size of the channel or bore at these points.

In the accompanying drawings, Figure l is a perspective view ot' a section of the tubing. Fig. 2 is a longitudinal section of `the same; and Fig. 3 is a transverse section.

A A are semi-cylindrical channeled pieces of wood with edges correspondingly grooved and tongued to t each other, thus forming, when properly matched, a tube with a uniform smooth channel or bore for the passage of water, the joints being water-tight.

B is a metallic coupling or fet-rule, which tapers from the center toward each end, and into which the tenons C, which are correspondingly tapered, are tightly driven.

D D are the matching pieces ofthe tubingA.

E is the channel or bore of the tubing A.

F is the wire which is wound around the tub- (Model.)

ing to retainthe parts rigidly together and enable the tubing to successfully resist any pressure which may be exerted from within.

Gr is the channel or bore of the tenons C. Its interior diameter is the same as that ofthe tubing. By being rimmed from the extremity of the tubing it is made to taper gradually outward, so that its exterior diameter is somewhat greater than its interior, in order that the otherwise unil'orm size of the channel or bore of the tubing may not be contracted by the inward expansion or swelling of the wood at the extremities of each section of the tubing A.

Finding from practical experience in the use of this tubing that where no provision ot' this character is made the passage for the water at these points frequently becomes so contracted as to practically reduce the carryingcapacity of the tubing to that of.v its least diameter at the extremities of each section, I have dcvised this simple and effectual improvement, which consists in the enlarging the bore of the tenons to the extent of their liability to contraction. With this device I succeed in preserving, under all circumstances, a uniform channel throughout the entire length ofthe tubing.

The tubing is better preserved from decay by being boiled in impervious coating.

What I claim as my invention, and desire to secure by Letters Patent, s

In a water-pipe, a section of-pipe having the tenons on its ends enlarged internally, so that should the ends or tenons be contracted in size the internal bore ot' the pipe will not be contracted thereby, substantially as shown.

In testimony whereof I at'tix my signature in presence of two witnesses.

WILLIAM F. MOULTON.

Witnesses:

CHARLES E. ALLEN, GHAs. F. LEWIS. 

